HAZUS-MH, a multi-hazard risk assessment software tool from FEMA, should be open-sourced. Improvements in usability, GIS integration, reports, and in some cases scientific modeling can be achieved by opening the source code while still maintaining an authoritative version for grant-funded programs like HMGP.

(See an academic editorial regarding Open HAZUS at http://dx.doi.org/10.1061/(ASCE)CP.1943-5487.0000022)